Thermodynamics and I-V characteristics of resistance-shunted Josephson junctions

被引:0
|
作者
Kato, T [1 ]
Imada, M [1 ]
机构
[1] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1068666, Japan
来源
PHYSICA B | 2000年 / 284卷
关键词
Coulomb blockade; dissipation; Josephson junction; superconductor-insulator transition;
D O I
10.1016/S0921-4526(99)03033-1
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Resistance-shunted Josephson junctions are studied theoretically based on a tight-binding model. In addition to the effective bandwidth 2h Delta(eff), this multi-level system genuinely has a novel crossover at lower energy Kh Delta(eff) below which the density of states becomes strongly degenerate, where K is a dimensionless damping strength. The optical responses take nearly Lorentzian forms with a width of the order of Kh Delta. The non-linear I-V characteristics is also discussed. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:1820 / 1821
页数:2
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